Navigation Links
Modern shift work pattern potentially less harmful to health
Date:9/27/2011

Recent research suggests that the modern day-day-night-night shift pattern for shift workers may not be as disruptive or as potentially carcinogenic as older, more extreme shift patterns.

"Recent research has suggested shift work could increase the risk of cancer, although the biological mechanism responsible for this observation is still unknown," says Anne Grundy, the paper's lead author and a doctoral student in the Department of Community Health and Epidemiology. "Our study indicates that the now common rotating shift pattern of day-day-night-night may not disrupt circadian rhythm or melatonin production significantly."

Melatonin is a hormone that has been shown to have anti-oxidant and tumor suppressor qualities. Since the production of melatonin is tied to the light-dark cycle and peaks between midnight and 4am, shift workers who are exposed to light at night may have an increased risk of diseases like cancer.

Ms. Grundy and her research colleagues recruited 123 female shift workers at Kingston General Hospital (KGH). They tested the participants to determine both their peak melatonin levels and the overall change in their melatonin levels during a winter day shift and night shift and a summer day shift and night shift. During these testing periods, the participants wore light meters that objectively measured the surrounding light intensity.

The researchers found that the light level in the KGH wards at night is generally dim and that there is little difference in peak melatonin levels in shift workers working during the day or night shift. However, in instances where the levels of light increased during a night shift, the workers'overall change in melatonin levels decreased slightlya finding that is statistically significant.

"We've already seen a shift away from the older patterns of two weeks of days, two weeks of nights, and a short time off to more humane patterns of day-day-night-night then five days off, so it's possible that an intervention to combat the health risks of shift work has already occurred," says Ms. Grundy. "However, the overall change in melatonin levels that we found may still be a concern. We look forward to seeing other studies that either confirm our findings or that examine the impact of specific risk factors like extreme shift patterns and higher intensities of light at night."


'/>"/>
Contact: Christina Archibald
christina.archibald@queensu.ca
613-533-2877
Queen's University
Source:Eurekalert

Related medicine news :

1. Electronic Merchant Systems Modernize Medical Billing
2. Learn to Dance in a Day -- Beginner Workshop Launches Modern Jive in Toronto
3. 24x7 Infection Control, Inc. Announces World's First, Modern “Shield” Against Microbial Contamination
4. Bick Group Launches Leveraging Cloud Computing Within the Modern Data Center Webinar Series
5. Leonardos anatomical sketches fascinate modern-day anatomist
6. iVillage Prescribes New Health Site for the Modern Woman
7. Bloomberg School of Public Health awarded $15 million for laboratory renovation and modernization
8. Modern medicine conquers witchcraft
9. Denver Plastic Surgeon Deploys Sophisticated Lasers in Modern Beauty, Anti-aging Treatments
10. The New 2010 Modernized Medicare Supplement Plans: Positive Changes in the Midst of Health Care Reform
11. Action of modern drug demonstrates how 2 ancient human systems interact
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/13/2017)... Madrid, Spain (PRWEB) , ... January 13, 2017 , ... ... the Melia Avenida America hotel on March 3-4, 2017. This Congress is expertly ... focused on the management of patients with lung cancer. , Chaired by Dr. Giorgio ...
(Date:1/13/2017)... Princeton, NJ (PRWEB) , ... January 13, 2017 , ... ... of sale companions, will be showcasing the next generation companion scanner and data collector ... City. The new KDC270 has been created as an answer to the market’s need ...
(Date:1/13/2017)... ... January 13, 2017 , ... An inventor from Pahrump, Nev., used an unsavory medical experience ... me wear a Foley catheter and urine bag for a half year due to lazy ... decided that there should be a better way to do this." , He then designed ...
(Date:1/13/2017)... MN (PRWEB) , ... January 13, 2017 , ... People ... to endure jolts of pain whenever they brush their teeth. Sadly, most dental hygiene ... who have sensitive gums and teeth. For these people, continuing their daily oral care ...
(Date:1/13/2017)... ... January 13, 2017 , ... Friday, January 13 at 5 pm, ... room, increasing the size of the location to 90,000 square feet. , Included in ... course that takes customers on an educational tour of the historic route, with each ...
Breaking Medicine News(10 mins):
(Date:1/13/2017)... 13, 2017  Alfalfa, cattle, leafy greens and rosy cheeked ... film , which emphasizes the food industry,s shift from response ... COPAN,s Swab Rinse Kit (SRK™) ... sampling process in the wake of the new FDA ... COPAN is expanding the U.S. production of the ...
(Date:1/13/2017)... 13, 2017 The 2016 election resulted ... several states voting in favor of legalizing cannabis for recreational ... market in the U.S. In addition, the state of ... annual cannabis products sales. The ArcView Group has published an ... legal cannabis sales in the U.S. last year reached $6.7 billion, ...
(Date:1/13/2017)... 2017 Research and Markets has announced the ... report to their offering. ... Cystic fibrosis (CF) is a progressive genetic condition ... fibroses transmembrane conductance regulator (CFTR) gene from both parents. The defective ... and result in the buildup of a thick and sticky mucus ...
Breaking Medicine Technology: